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From Dan Retzlaff <>
Subject Re: Impact of old data on performance
Date Tue, 28 Feb 2012 17:51:03 GMT
Hi Stefan. Can you share the output of nodetool cfstats?

On Tue, Feb 28, 2012 at 1:50 AM, Stefan Reek <> wrote:

> Hi All,
> We are running a 3-node cluster with Cassandra 0.6.13.
> We are in the process of upgrading to 1.x, but can't do so for a while
> because we can't take the cluster offline.
> Until now 0.6.13 has run without problems, but lately we are getting some
> performance issues.
> We are getting timeouts on both reads and writes.
> The cluster contains a lot of "old" data which is only read very
> occasionally and not written to at all.
> Is it possible for this data to negatively impact the performance of the
> cluster?
> If so, would it help to move this data to another columnfamily/keyspace?
> Cheers,
> Stefan

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